The show continues to be great. Yep, the close Kryptonite was a mistake. Lana having a yen for Superman was a neat nuance. Cup of Coffee - yeah!
I'll go out on a limb, with all the portal openings - wonder if Evil Kal from John Henry's world doesn't pop in to the fray in the finale.
I don't think we will see Kara or any of other Arrowverse folks. That's good, IMHO, given the way those shows fell apart.